Compact Fluid Mixing Device with Parallelogram Chamber
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Solution Overview
Problem
Existing fluid mixing devices for catalytic reactors in exothermic reactions are bulky, complex, and costly to manufacture, particularly when designed for large diameters, and fail to achieve efficient temperature homogeneity and mixing efficiency.
Innovation Solution
A compact fluid mixing device with a parallelogram-shaped mixing chamber and deflection means on its internal walls, which includes a pre-distribution plate with perforations and risers, optimizing fluid flow and heat transfer by swirling motion and minimizing bulk and manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a complex quench device with multiple components (lance, baffle, box, distributor plate) is used to achieve efficient fluid mixing and temperature homogeneity, then mixing efficiency is improved, but device complexity and bulk increase
Solution Approach 1:
The invention extracts the essential mixing function from the complex multi-component quench device and implements it through a single perforated plate with risers. This simplified structure removes unnecessary components while maintaining the core functionality of fluid mixing and temperature homogenization, directly resolving the contradiction between mixing efficiency and device complexity
Solution Approach 2:
The invention changes the structural parameters of the mixing device by using a perforated plate with specific riser configurations instead of a complex three-dimensional quench box. This parameter change simplifies the device geometry and manufacturing while achieving the required mixing performance through optimized flow distribution
2Manufacturing precision
If the diameter of the mixing chamber is increased to improve mixing capacity, then mixing efficiency is improved, but manufacturing cost increases
Solution Approach 1:
The invention segments the mixing function into multiple independent risers distributed across the perforated plate. Each riser acts as an independent mixing element, allowing the system to achieve high mixing capacity without requiring a large single chamber. This segmentation enables scalable design that maintains manufacturing efficiency while improving mixing performance
Solution Approach 2:
The invention transitions from a three-dimensional mixing chamber to a two-dimensional perforated plate structure with vertical risers. This dimensional change allows the mixing function to be distributed across a larger surface area without increasing the overall volume or requiring large diameter chambers, thereby reducing manufacturing costs while maintaining mixing efficiency
3Volume of moving object
If a compact mixing device is used to reduce space requirements, then device bulk is reduced, but mixing efficiency may be compromised
Solution Approach 1:
The invention uses the dynamic flow of process fluids passing through the perforated plate and risers to achieve mixing. The kinetic energy of the flowing fluids drives the mixing process, eliminating the need for large static mixing chambers. This dynamic approach enables effective mixing in a compact device with reduced bulk
Solution Approach 2:
The mixing device utilizes the existing flow of process fluids to perform the mixing function without requiring additional energy input or large device volume. The fluids themselves provide the driving force for mixing as they pass through the perforated plate and risers, enabling compact design while maintaining mixing efficiency
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves enhanced thermal and mixing efficiency, easier manufacturing, and increased compactness, ensuring homogeneous temperature and concentration of fluids, while reducing space requirements in the reactor.
Implementation Method 1
it comprises at least one means for deflection over at least one of the four internal walls of said mixing chamber with a parallelogram section
Implementation Method 2
at least one means for injecting a quench fluid opening into said collection conduit
Implementation Method 3
a pre-distribution plate comprising a plurality of perforations and comprising at least one riser
Data Source
AI summary
A device for mixing fluids for a downflow catalytic reactor (1), havingat least one substantially horizontal collector (5) provided with a substantially vertical collection conduit (7) receiving fluids collected by said collector (5); an injector (8) injecting a quench fluid opening into said collection conduit (7);a mixing chamber (9) located downstream of the collector (5) in the direction of movement of the fluids, having an inlet end connected directly to the collection conduit (7) and an outlet end (10) evacuating the fluids; anda pre-distribution plate (11) having a plurality of perforations and at least one riser (13), being located downstream of said mixing chamber (9) in the direction of movement of the fluids;the section of the mixing chamber (9) is a parallelogram and has at least one deflector (15) over at least one of the four internal walls of the mixing chamber (9) with a parallelogram section.